Pollutant aerobic biological degradation breath measuring method and device

A technology of aerobic biology and measurement methods, which is applied in the direction of measurement devices, biochemical equipment and methods, and measurement/inspection of microorganisms, and can solve problems such as low test frequency, limited test frequency, and low test accuracy

Inactive Publication Date: 2006-11-29
CHONGQING UNIV
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Problems solved by technology

For example, the RA-1000 respiration measuring instrument developed by the Environmental Technology Department of Wageningen Agricultural University in the Netherlands, this respiration instrument uses the same sensor to measure the dissolved oxygen concentration of the inlet and outlet mixture by changing the flow direction, thus limiting the test frequency of OUR
[0007] In practical application, the above respiration measurement methods and devices all have defects such as low test accuracy and low test frequency.

Method used

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  • Pollutant aerobic biological degradation breath measuring method and device
  • Pollutant aerobic biological degradation breath measuring method and device
  • Pollutant aerobic biological degradation breath measuring method and device

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Embodiment Construction

[0054] When the glucose solution with a concentration of 20gCOD / L is used as the sample to be tested, the method is carried out in the following steps:

[0055] (1) Keep the clear water in the tank at 20°C;

[0056] (2) Add 4000ml of activated sludge mixture to the aeration chamber, with a concentration of 1000mgMLVSS / L;

[0057] (3) The air flow rate that feeds into the aeration chamber is 0.1L / min; Turn on the magnetic stirrer respectively, make the stirring rotor at the bottom of the aeration chamber and the bottom of the breathing chamber rotate, and the stirring speed is 100 rpm;

[0058] (4) Open peristaltic pump, make its flow rate be 200ml / min, make the activated sludge mixture circulate in the measuring chamber, breathing chamber and aeration chamber of the breathing chamber inlet and outlet measuring chamber through the pipeline;

[0059] (5) Open the oxygen utilization rate test software and set the parameters: the physical channel is "0" and "1", and the sampling ...

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Abstract

The invention is a pollutant aerobic-biodegradation breathing measuring method and device, relating to a method and device for measuring oxygen utilization ratio in the course of processing waste water by aerobes. And the measuring method comprises the steps of: checking dissolved oxygen sensor, keeping temperature of water tank constant, putting in microbial mixed solution, blending, circulating mixed solution, setting parameters, putting in to-be-measured sample and calculating; and the measuring device comprises water tank, magnetic blending mechanism, aeration mechanism, aeration chamber, breathing chamber, measuring chamber, pH sensor, dissolved oxygen sensor, signal transmit lines, transducer terminal box, computer and oxygen utilization ratio measuring software. And the invention has advantages of less interference, high testing accuracy and frequency, high instrument automation degree, etc. and it is applied to the aspects of city sewage composition characterization, inlet water toxicity detection, evaluation and early- warning in sewage factory, process control and operation management in sewage factory, etc.

Description

technical field [0001] The present invention relates to a pollutant aerobic biodegradation respiration measurement method and device, specifically to measure the oxygen utilization rate (Oxygen Utility Rate, OUR) of pollutants in activated sludge microbial aerobic degradation sewage, which is suitable for urban sewage Sub-characterization, detection of toxic substances in sewage treatment plant influent, assessment and early warning of toxic effects, process control and operation management of urban sewage treatment plants, and laboratory research on process kinetics of activated sludge in sewage treatment, etc., belong to the field of sewage treatment technology. Background technique [0002] In the prior art, the usual respiration measurement methods and devices are mainly divided according to two criteria: (1) measuring the oxygen concentration in the liquid phase or the gas phase; (2) whether there is liquid or gas input and output (dynamic or static) . The principle of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00C12Q1/00
Inventor 张代钧卢培利张欣曹海彬
Owner CHONGQING UNIV
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